Multiply your answer should be a monomial in standard form (-4x^2)(7x^3)

Answers

Answer 1
Answer:

answer: -28x^5

exlaningtion:I used my brain dhdhdishdhdhdhdhdh


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What is 10 to the power of 9 times 2.64

Answers

Solution: 10∧9 x 2.64 = n
          
 Answer: 2,640,000,000

7.25 times 8 1/2= what?

Answers

7.25 * 8 1/2 = ?
7.25 * 17/2 = 61.625

**************************HOPING THAT THIS WILL HELP YOU!!!*******************************
7.25=7 (1)/(4) = (29)/(4) \n \n 8 (1)/(2) = (17)/(2) \n \n (29*17)/(4*2) = (493)/(8) = 61 (5)/(8) \n \n \boxed{61 (5)/(8) }

21+(4x8)-2 would be nice to help me I need it soon!

Answers

Step-by-step explanation:

Using BODMAS

BRACKET (4×8)

21+32-2

53-2

•••

ANSWER== 51

A car leaves a town traveling at 60 miles per hour. Two hours later, a second car leaves the town traveling the same route and overtakes the first car in 6 hours and 40 minutes. How fast was the second car traveling?

Answers


After two hours, the first car has traveled (2 x 60) = 120 miles.
That's the gap that the second car has to close.

The second car closes the gap of 120 miles in 6-2/3 hours.
He must have exceeded the first car's speed by (120/6-2/3) mph.

6-2/3 = 20/3

120 divided by 20/3  =  120 x 3/20 = 360/20  =  18 mph

The second car exceeded the first car's speed by 18 mph,
so he had to be traveling (60 + 18) = 78 mph to catch up.

Check:

In 6-2/3 hours . . .

The first car covers  (60 x 20/3) = 400 miles.

The second car covers  (78 x 20/3) = 520 miles.
This is the same distance as the first car PLUS the 120
that he was behind when he started out.
                                                                     yay !


78 mph
The second car travels 520 miles in 400 minutes. 520/400=1.3. 1.3*60=78.

If a+b+c=0 for a,b,c then prove a²/bc+b²/ca+c²/ab=3.

Answers

according to the identity if a+b+c=0
then a3+b3+c3=3abc
a3+b3+c3/abc=3
a2*a/bc*a+b2*b/ca*b+c2*c/ab*c=3
cancel a,b,c in   all the fraction then you get
a²/bc+b²/ca+c²/ab=3. 
hence proved


What is the value of 36x-8y2 when x=3 and y=-6

Answers

Assuming that the 2 after the y means squared...

36x3=108
-6x-6=36
8x36=288
108-288=-180